Do not show the debug bar in the modal dialog (see #6302)
Update all language files
Bump the version number
Merge branch 'hotfix/3.1.4'
Merge branch 'hotfix/3.1.4' into develop

Conflicts:
	system/config/constants.php
	system/docs/CHANGELOG.md
	system/modules/calendar/languages/da/tl_user.xlf
	system/modules/core/languages/da/tl_settings.xlf
	system/modules/repository/classes/RepositorySettings.php
Do not replace the UUID with the file path in the model (see #6303)
Create new UUIDs when duplicating files or folders (see #6301)
Simplified Model::mergeRow

This way a developer only needs to override setRow() to handle all fields
Uset relation when changing a model value
CS
Merge pull request #6308 from aschempp/pullrequests/model-mergeRow
Merge pull request #6307 from aschempp/pullrequests/model-relations
Fix some minor code formatting issues
Update Colorbox to version 1.4.31 (see #6309)
Simplify the "iflng" and "ifnlng" insert tags (see #6291)
Never try to write virtual fields in a model to the database (see #6313)
Order the template list alphabetically (see #6276)
Fix a wrong variable name in the `Model` class
Call `markModified()` in the model setter and add the `isModified()` method
Only apply `empty($arrSet)` after `Model::preSave()`